#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
void f(char* a, char* b)
{
	a = b;
	(*a)++;
}
int main()
{
	char c1 = 'a', c2 = 'A', * p1, * p2;
	p1 = &c1;
	p2 = &c2;
	f(p1, p2);
	printf("%c%c\n", c1, c2);
	return 0;
}